WiFi Adapter Stopped Working on Dell Studio 1555 w/ Win 7/64bit

I have a Dell Studio 1555 laptop running Win 7/64 bit.  It has an Intel Link 5100AGN wireless adapter.  Wireless adapter suddenly stopped working.  There was a Windows update completed the day before. Coincidence?

I have:

1. Rebooted numerous times.
2. Updated driver.
3. Made sure Wi-Fi was on using CTRL+F2 toggle.
4. Deleted the adapter in Device Manager.  Rebooted and allowed Windows to reinstall and configure.
5. Rebooted numerous times.
6. NOTE:  The Ethernet works fine. 
7. NOTE:  The router works fine with other laptops and smart televisions.  Have not modified any router settings.  But just in case, have rebooted modem and router many times.
8. The laptop does see the home network.  But it won't connect.  I went to Manage Wireless Networks and deleted my home wireless network.  Rebooted.  It found the network.  I entered passcode, but it would not connect.
9. Will take it to Starbucks later today to see if it will connect to another Wi-Fi network.
10. I have NOT done a system restore to before the Windows update.  Might do that if it won't work with the Wi-Fi at Starbucks.

Any suggestions????

Not looking for heroic measures.  It is a 5 year old laptop after all.  Can probably solve the situation for the short term with a USB wireless adapter?

Just looking for any ideas as to if there was an easy fix I am missing.  It just up and stopped connecting.  There is a yellow star on the wireless bars on the system tray.

Thanks.